One of Perl's biggest problems atm is public perception.
Ruby seems to have exclusive rights for flashy websites, so for Mojo we've tried to break the cycle.
Maybe it inspires other Perl projects too and we can start a new trend of prettier Perl websites.

Update: Note that this a marketing website, it serves no documentation purposes. (some commenters might have misunderstood this)
Update2: Don't explain what you think would look better, just make a mockup and show us!